Attempt Number 2, Because It Crashed
Addon:
-Added In-Game Credits For Komaokc

Null Ancient:
-Removed Un-Used Dust-Motes
-Added Missing Rooftop In The Finale Holdout

Null Ancient:
-Added 2 Secrets & 1 Secret Room
-Added Final Hints
-Made The Third Room Deeper Down
-Adjusted The Final Room A Bit To Give Infected A Second Path

Sand Additive Fire:
-2 Secrets Added
-Added A New Possible Event

Sun Dawning:
-The Bridge Got Reworked
-Fixed Barrels Blocking The Way

Deep Backwards:
-Texture Fixes

Added The Final Map: <Null Ancient>

-Added Physics objects to every map
-Little map changes
-Some navemesh changes
-Can use my other Addon "Optional Directors" (It is harder & less predictable)

Map Five Is Now Playable!

Steam, please don't crash again...

General:
-Fixed the navmesh to properly function/everything working now
(Found a missing non-merged nav, added a link I must've forgot ages ago that actually affected gameplay & generally checking everything so the AI can climb/jump down correctly)
-Optimized / changed a little stuff to have better visleaves/clusters
(If these maps were demanding, then you would notice a difference!)

Deep Backwards:
-Added a little maze room
(It is not much but it feels a bit less empty now)

Layout:
-Added a small building full of clowns (WIP)
(The door access is hidden in the same big room)

Sun Dawning:
-Raised the "roof"by 8 units in the extra path so the shadows aren't clipping anymore
(And I forgot to update the photo)
-A full on Navmesh optimization
(The map is complete... hopefully)

Sand Additive Fire:
-Made some progress
-Still not playable

General:
-Map names, files & Map properties
(Should be now consistent)

Layout:
-Added a secret room
(I can hardly call it a "secret" room)
-Removed the "Echo Voices"
(I should not have added them in the first place)

Sand Additive Fire:
-Added as (W)ork (I)n (P)rogress map
(Just the first two rooms)

Map 4:
-Added Buttons you most likely need to press
(It's to open up the Saferoom, just explore)
-Added a whole map section
(Basically completing the map)
-Added The Stairs
(It's not hard, just don't fall)
-Added a few secret rooms
(And one of them has a functioning rescue closet!)
-Changed some sounds & Infected spawns
(Don't worry about it)
-Namesh fully done... unless I add more rooms later
(Created by hand, easier than searching and fixing it... less room of error)
-Lighting done
(Unless I find a weird lighting spot, there is always a weird lighting spot)

-Expanded the 4th map
-Optimized/fixed Navmeshes